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United States Patent | 5,647,969 |
Mao | July 15, 1997 |
A process and system (100) for purifying water includes a pair of electrodes (52) with a gap (58) between the electrodes (52). The electrodes (52) are connected to a power supply (116) that places a voltage across the two electrodes (52). Raw water (51) is then passed through the electrodes (52) which captures a plurality of ionic species (224) resulting in purified water (64). A system (100) that takes advantage of this process has a container (102) that holds the pair of electrodes (52) or filter (102). A controller (120) connected to a current sensor (118) monitors the current across the electrodes (52) and adjusts a valve (108) based on the current. If the current is above a first threshold the water flow is decreased and if the current flow is below a second threshold the water flow is increased.
Inventors: | Mao; Zhenhua (Duluth, GA) |
Assignee: | Motorola, Inc. (Schaumburg, IL) |
Appl. No.: | 500300 |
Filed: | July 10, 1995 |
Current U.S. Class: | 205/743; 205/758; 205/760 |
Intern'l Class: | C02F 001/461; C02F 001/469 |
Field of Search: | 205/742,743,753,758,760 204/228,242,275 |
3919062 | Nov., 1975 | Lundquist, Jr. et al. | 205/753. |
5425858 | Jun., 1995 | Farmer | 205/743. |
5443700 | Aug., 1995 | Hirose et al. | 204/149. |
5547581 | Aug., 1996 | Andelman | 205/742. |